content: /* -*- mode: java; c-basic-offset: 2; indent-tabs-mode: nil -*- */
  
  /*
    Part of the Processing project - http://processing.org
  
    Copyright (c) 2012-15 The Processing Foundation
    Copyright (c) 2004-12 Ben Fry and Casey Reas
    Copyright (c) 2001-04 Massachusetts Institute of Technology
  
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation, version 2.1.
  
    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.
  
    You should have received a copy of the GNU Lesser General
    Public License along with this library; if not, write to the
    Free Software Foundation, Inc., 59 Temple Place, Suite 330,
    Boston, MA  02111-1307  USA
  */
  
  package processing.opengl;
  
  import processing.core.PGraphics;
  import processing.core.PShape;
  import processing.core.PShapeOBJ;
  
  
  public class PGraphics3D extends PGraphicsOpenGL {
  
    public PGraphics3D() {
      super();
    }
  
  
    //////////////////////////////////////////////////////////////
  
    // RENDERER SUPPORT QUERIES
  
  
    @Override
    public boolean is2D() {
      return false;
    }
  
  
    @Override
    public boolean is3D() {
      return true;
    }
  
  
    //////////////////////////////////////////////////////////////
  
    // PROJECTION
  
  
    @Override
    protected void defaultPerspective() {
      perspective();
    }
  
  
    //////////////////////////////////////////////////////////////
  
    // CAMERA
  
  
    @Override
    protected void defaultCamera() {
      camera();
    }
  
  
    //////////////////////////////////////////////////////////////
  
    // MATRIX MORE!
  
  
    @Override
    protected void begin2D() {
      pushProjection();
      ortho(-width/2f, width/2f, -height/2f, height/2f);
      pushMatrix();
  
      // Set camera for 2D rendering, it simply centers at (width/2, height/2)
      float centerX = width/2f;
      float centerY = height/2f;
      modelview.reset();
      modelview.translate(-centerX, -centerY);
  
      modelviewInv.set(modelview);
      modelviewInv.invert();
  
      camera.set(modelview);
      cameraInv.set(modelviewInv);
  
      updateProjmodelview();
    }
  
  
    @Override
    protected void end2D() {
      popMatrix();
      popProjection();
    }
  
  
  
    //////////////////////////////////////////////////////////////
  
    // SHAPE I/O
  
  
    static protected boolean isSupportedExtension(String extension) {
      return extension.equals("obj");
    }
  
  
    static protected PShape loadShapeImpl(PGraphics pg, String filename,
                                                        String extension) {
      PShapeOBJ obj = null;
  
      if (extension.equals("obj")) {
        obj = new PShapeOBJ(pg.parent, filename);
        int prevTextureMode = pg.textureMode;
        pg.textureMode = NORMAL;
        PShapeOpenGL p3d = PShapeOpenGL.createShape((PGraphicsOpenGL)pg, obj);
        pg.textureMode = prevTextureMode;
        return p3d;
      }
      return null;
    }
  
  
  
    //////////////////////////////////////////////////////////////
  
    // SHAPE CREATION
  
  
  //  @Override
  //  protected PShape createShapeFamily(int type) {
  //    PShape shape = new PShapeOpenGL(this, type);
  //    shape.set3D(true);
  //    return shape;
  //  }
  //
  //
  //  @Override
  //  protected PShape createShapePrimitive(int kind, float... p) {
  //    PShape shape = new PShapeOpenGL(this, kind, p);
  //    shape.set3D(true);
  //    return shape;
  //  }
  
  
    /*
    @Override
    public PShape createShape(PShape source) {
      return PShapeOpenGL.createShape3D(this, source);
    }
  
  
    @Override
    public PShape createShape() {
      return createShape(PShape.GEOMETRY);
    }
  
  
    @Override
    public PShape createShape(int type) {
      return createShapeImpl(this, type);
    }
  
  
    @Override
    public PShape createShape(int kind, float... p) {
      return createShapeImpl(this, kind, p);
    }
  
  
    static protected PShapeOpenGL createShapeImpl(PGraphicsOpenGL pg, int type) {
      PShapeOpenGL shape = null;
      if (type == PConstants.GROUP) {
        shape = new PShapeOpenGL(pg, PConstants.GROUP);
      } else if (type == PShape.PATH) {
        shape = new PShapeOpenGL(pg, PShape.PATH);
      } else if (type == PShape.GEOMETRY) {
        shape = new PShapeOpenGL(pg, PShape.GEOMETRY);
      }
      shape.set3D(true);
      return shape;
    }
  
  
    static protected PShapeOpenGL createShapeImpl(PGraphicsOpenGL pg,
                                                  int kind, float... p) {
      PShapeOpenGL shape = null;
      int len = p.length;
  
      if (kind == POINT) {
        if (len != 2 && len != 3) {
          showWarning("Wrong number of parameters");
          return null;
        }
        shape = new PShapeOpenGL(pg, PShape.PRIMITIVE);
        shape.setKind(POINT);
      } else if (kind == LINE) {
        if (len != 4 && len != 6) {
          showWarning("Wrong number of parameters");
          return null;
        }
        shape = new PShapeOpenGL(pg, PShape.PRIMITIVE);
        shape.setKind(LINE);
      } else if (kind == TRIANGLE) {
        if (len != 6) {
          showWarning("Wrong number of parameters");
          return null;
        }
        shape = new PShapeOpenGL(pg, PShape.PRIMITIVE);
        shape.setKind(TRIANGLE);
      } else if (kind == QUAD) {
        if (len != 8) {
          showWarning("Wrong number of parameters");
          return null;
        }
        shape = new PShapeOpenGL(pg, PShape.PRIMITIVE);
        shape.setKind(QUAD);
      } else if (kind == RECT) {
        if (len != 4 && len != 5 && len != 8 && len != 9) {
          showWarning("Wrong number of parameters");
          return null;
        }
        shape = new PShapeOpenGL(pg, PShape.PRIMITIVE);
        shape.setKind(RECT);
      } else if (kind == ELLIPSE) {
        if (len != 4 && len != 5) {
          showWarning("Wrong number of parameters");
          return null;
        }
        shape = new PShapeOpenGL(pg, PShape.PRIMITIVE);
        shape.setKind(ELLIPSE);
      } else if (kind == ARC) {
        if (len != 6 && len != 7) {
          showWarning("Wrong number of parameters");
          return null;
        }
        shape = new PShapeOpenGL(pg, PShape.PRIMITIVE);
        shape.setKind(ARC);
  
      } else if (kind == BOX) {
        if (len != 1 && len != 3) {
          showWarning("Wrong number of parameters");
          return null;
        }
        shape = new PShapeOpenGL(pg, PShape.PRIMITIVE);
        shape.setKind(BOX);
      } else if (kind == SPHERE) {
        if (len < 1 || 3 < len) {
          showWarning("Wrong number of parameters");
          return null;
        }
        shape = new PShapeOpenGL(pg, PShape.PRIMITIVE);
        shape.setKind(SPHERE);
      } else {
        showWarning("Unrecognized primitive type");
      }
  
      if (shape != null) {
        shape.setParams(p);
      }
  
      shape.set3D(true);
      return shape;
    }
    */
  }